ts-jest conceals TypeScript error in jest's watch mode

[fischeversenker]

🐛 Bug Report

Watch mode in combination with ts-jest let's test suites pass regardless of TypeScript errors in the spec file.

To Reproduce

Please see the repository that I provided below and follow the reproduction steps in its README.

Expected behavior

Watch mode should not miraculously turn failing tests into passing tests.

Link to repl or repo (highly encouraged)

https://github.com/fischeversenker/ts-jest-error-repro

Debug log:

The debug log was too long to fit in a GitHub comment so I added it to the reproduction repository: ts-jest.log

envinfo

System:
    OS: Linux 4.19 Ubuntu 20.04.1 (WSL 2 on Windows 10)
    Node version: 14.15.4

Npm packages:
    jest: 26.6.3
    ts-jest: 26.5.4
    typescript: 4.2.4

[ahnpnl]

duplicate with #943 which was fixed under next tag. You can try it out.

[fischeversenker]

Thanks for the info.
I can confirm that this bug is indeed fixed with ts-jest@27.0.0-next.10 (in combination with jest@27.0.0-next.8) 🎉 🙏